Given their history of cooperation on nuclear weapons and missile technology, and given that Iran and North Korea are the two countries most belligerent toward the United States, it is not unreasonable to conclude that if North Korea has a nuclear capable ICBM, so does Iran.

The U.S.-South Korea alliance has outlived its usefulness. Instead of reassuring Seoul, the Trump administration should prepare to renegotiate the alliance, creating a looser but more equal cooperative military relationship. South Korea should take on responsibilities commensurate with its capabilities.